CN106480241B - A kind of production technology of super Waterproof leather - Google Patents

A kind of production technology of super Waterproof leather Download PDF

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Publication number
CN106480241B
CN106480241B CN201611029176.5A CN201611029176A CN106480241B CN 106480241 B CN106480241 B CN 106480241B CN 201611029176 A CN201611029176 A CN 201611029176A CN 106480241 B CN106480241 B CN 106480241B
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parts
weight
rotates
leather
added
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CN106480241A (en
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陈惜治
林树生
陈浩
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Fujian Yongjian Leather Technology Co ltd
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JINJIANG CITY YONGJIAN LEATHER PRODUCTS Co Ltd
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Priority to CN201810660702.0A priority Critical patent/CN108796141A/en
Priority to CN201611029176.5A priority patent/CN106480241B/en
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    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/04—Soaking
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C11/00—Surface finishing of leather
    • C14C11/003—Surface finishing of leather using macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/10—Vegetable tanning
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents
    • C14C3/22—Chemical tanning by organic agents using polymerisation products
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/28—Multi-step processes
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
    • C14B2700/27—Rotating drums for treating leather

Abstract

The present invention discloses a kind of production technology of super Waterproof leather, carry out the processing such as return water, retanning, neutralization, filling, dyeing, stuffing, fixation, compound epidermis and resin bed successively to second layer leather base, the technique not only includes the multiple waterproof processing step of leather, and in the surface recombination epidermis and resin bed of good permeability of double-layer leather base material, both the texture of leather had been ensure that, the effect for strengthening leather physical strength is played again, therefore the leather that thus technique productions obtain has superpower water resistance and permeability, and does not destroy the texture of leather.

Description

A kind of production technology of super Waterproof leather
Technical field
The present invention relates to tanning technology fields, and in particular to be a kind of production technology of super Waterproof leather.
Background technology
The research of ox-hide second layer leather is gradually goed deep into recent years, but since common leather is not water-fast, leather uses durable Property, the generality wearing applicability, use all be restricted, particularly rain, the dirts flaw such as muddy road surface walking or beverage When the leather shoes of the ox-hide second layer leather making without specially treated, clothes and other items are arrived in dirt, leather and fur products is just in very awkward Situation is recovered it is difficult to carry out reprocessing as new.However by leather after common waterproof technology processing, the ventilative moisture absorption of leather Etc. performances be then affected, and waterproof effect is unsatisfactory.As requirement of the people to leather property is also higher and higher, exploitation one The new production technology of kind causes leather to have both water-proof function while possessing permeability, has a vast market prospect.
The content of the invention
It is an object of the invention to provide a kind of production technologies of super Waterproof leather, have using the leather of the technique productions Superpower water resistance and permeability, and the texture of leather is not destroyed.
In order to achieve the above objectives, solution of the invention is：
A kind of production technology of super Waterproof leather, comprises the following steps：
(1) sorting：It using second layer leather base as raw material, weighs, second layer leather base is put into rotary drum, using second layer leather base as 100 matter Amount part calculates the addition of other substances, and the rotating speed of rotary drum is 5~10rad/min；
(2) return water：30~40 DEG C of water, 0.5~0.7 parts by weight formic acid of 200~300 parts by weight are added in rotary drum, Rotate 50~70min, draining；
(3) retanning：Second layer leather base after return water adds in 30~40 DEG C of the water and 1~2 weight of 140~160 parts by weight The dyestuff of part is measured, rotates 15~30min, adds in the melamine class retanning agent of 1~3 parts by weight or dihydro-amine class retanning afterwards Agent is rotated further 20~40min, adds the acrylate resin tanning agent of 6~10 parts by weight, rotates 20~25min；Then add in The dubbin of 0.5~2 parts by weight rotates 20~25min；Add chromium powder, chromium tannin and each 1~3 weight of more metal retanning agents Part is measured, rotates 40~45min；
(4) neutralize：Into rotary drum add in sodium bicarbonate adjust pH be 3.0~4.0, rotate 20~30min after stand 120~ Then 180min rotates 10~20min, draining；Add in the neutralization of the water, 1~2 parts by weight of 30~40 DEG C of 140~160 parts by weight The sodium formate of type retanning agent and 0.5~0.8 parts by weight rotates 10~30min；Then the melamine of 1~3 parts by weight is added in Amine adjusts pH to 4.5~5.0, rotates 100~120min；Draining is totally afterwards with 25~35 DEG C of water of 200~300 parts by weight Washing, draining；
(5) waterproofing agent is added：30~40 DEG C of water of 80~120 parts by weight and preventing for 1~3 parts by weight are added in into rotary drum Aqua rotates 5~10min；
(6) fill, dye：The acrylate resin tanning agent and 0.5~2 parts by weight of 2~4 parts by weight are added in into rotary drum Dubbin rotates 120~150min；The dyestuff of 2~4 parts by weight is added in, is rotated further 90~120min, then supplement adds in 80 45~55 DEG C of water of~100 parts by weight rotates 10~15min；Then the formic acid of 0.5~1.5 parts by weight is added in altogether at twice, Formic acid is added in every time rotates 8~10min, draining；
(7) stuffing：40~60 DEG C of the water and 0.2~0.5 parts by weight of 200~300 parts by weight are added in into rotary drum Mass concentration is 30% ammonium hydroxide, rotates 10~15min, then adds in the dubbin of 2~4 parts by weight, rotates 60min；
(8) it is fixed：0.8~1.5 parts by weight formic acid is added in into rotary drum, formic acid is divided into three parts, adds in three times, every time It adds in formic acid and rotates 8~10min, draining respectively；
(9) go out drum, take horse, standing 12~for 24 hours, obtain double-layer leather base material；
(10) it is bonded epidermis：The application of adhesive on a surface of the double-layer leather base material, will be by superfluorescent fiber nonwoven The epidermis that cloth is formed is placed on this surface of the double-layer leather base material, and is bonded, and forms two layers with epidermis Leather；
(11) hot-press resin layer：It is placed on the surface of the epidermis of the double-layer leather with epidermis as resin bed The non-woven fabrics coated with polyurethane elastomer after, by hot pressing polyurethane elastomer melting and filming and and table Cortex fits, and obtains the super Waterproof leather.
In step (3), the melamine class retanning agent be MD-1 melamine retanning agents, the dihydro-amine class retanning agent For R7 double focusing cyanamides, the acrylate resin tanning agent is RVL resin retaning agents, and more metal retanning agents are ALB aluminium tannin.
In step (3), the mass ratio of the chromium powder, chromium tannin and more metal retanning agents is preferably 1：1：1.
In step (4), the neutralization type retanning agent is PNK neutralizing retanning agents.
In step (5), the waterproofing agent is waterproofing agent 9981.
In step (10), described adhesive is urethane resin adhesives.
In step (10), the superfluorescent fiber non-woven fabrics is the internal superfluorescent fiber non-woven fabrics containing polyurethane elastomer.
After adopting the above technical scheme, a kind of production technology of super Waterproof leather of the present invention, the technique not only include leather Multiple waterproof processing step, and in the surface recombination epidermis and resin bed of good permeability of double-layer leather base material, both It ensure that the texture of leather, and play the effect for strengthening leather physical strength, therefore the leather that thus technique productions obtain has Superpower water resistance and permeability, and the texture of leather is not destroyed.
Specific embodiment
In order to further explain the technical solution of the present invention, the present invention is explained in detail below by specific embodiment It states.
The dyestuff (BROWN ESR) arrived involved in following embodiment is purchased from Shanghai Yi Man weavings Chemical Co., Ltd., trimerization Cyanamide class retanning agent (MD-1 melamines retanning agent) is purchased from Shandong Li Ning new materials Co., Ltd, dihydro-amine class retanning agent (R7 Double focusing cyanamide) Zhong Hui Chemical Co., Ltd.s, acrylate resin tanning agent (RVL resin retaning agents) are purchased from purchased from Shandong Li Ning new materials Co., Ltd, dubbin (dubbin stoste) are purchased from Buddhist purchased from Quanzhou Bang Sheng Chemical Co., Ltd.s, waterproofing agent (waterproofing agent 9981) Mountain Shunde District Yue Ting new materials Co., Ltd, chromium powder (9811C chromium powders) are purchased from Chengdu newly peaceful Science and Technology Ltd., chromium tannin (JN chromium tannin) is purchased from Zhejiang Shenghui Chemical Industry Co., Ltd, more metal retanning agents (ALB aluminium tannin) purchased from the middle remittance limited public affairs of chemical industry Department, neutralization type retanning agent (PNK neutralizing retanning agents) are purchased from Shandong Li Ning new sciences and technologies Co., Ltd, (polyurethane resin glues adhesive Mixture is purchased from Zhejiang Province Huafeng synthetic resin Co., Ltd).
Embodiment one
A kind of production technology of super Waterproof leather, comprises the following steps：
(1) sorting：It using second layer leather base as raw material, weighs, second layer leather base is put into rotary drum, using second layer leather base as 100 matter Amount part calculates the addition of other substances, and the rotating speed of rotary drum is 5rad/min；
(2) return water：30 DEG C of water, the 0.5 parts by weight formic acid of 200 parts by weight are added in rotary drum, rotates 50min, draining；
(3) retanning：Second layer leather base after return water adds in 30 DEG C of water of 140 parts by weight and the dyestuff of 1 parts by weight, turns Dynamic 15min, adds in the melamine class retanning agent of 1 parts by weight, is rotated further 20min, add the acrylic acid of 6 parts by weight afterwards Resin tanning agent rotates 20min；Then the dubbin of 0.5 parts by weight is added in, rotates 20min；Add chromium powder, chromium tannin and More each 1 parts by weight of metal retanning agent rotate 40min；
(4) neutralize：It is 4.0 that sodium bicarbonate is added in into rotary drum and adjusts pH, stands 120min after rotating 20min, then rotates 10min, draining；The sodium formate of the water of 30 DEG C of 140 parts by weight, the neutralization type retanning agent of 1 parts by weight and 0.5 parts by weight is added in, Rotate 10min；Then the melamine of 1 parts by weight is added in, adjusts pH to 4.5, rotates 100min；Draining is totally afterwards with 200 weights Measure 25 DEG C of the water washing of part, draining；
(5) waterproofing agent is added：30 DEG C of water of 80 parts by weight and the waterproofing agent of 1 parts by weight are added in into rotary drum, is rotated 5min；
(6) fill, dye：The acrylate resin tanning agent of 2 parts by weight and the waterproof of 0.5 parts by weight are added in into rotary drum Oil rotates 120min；The dyestuff of 2 parts by weight is added in, is rotated further 90min, then supplement adds in 45 DEG C of water of 80 parts by weight, Rotate 10min；Then add in the formic acid of 0.5 parts by weight altogether at twice, add in formic acid every time and rotate 8min, draining；
(7) stuffing：It is 30% that 40 DEG C of water of 200 parts by weight and the mass concentration of 0.2 parts by weight are added in into rotary drum Ammonium hydroxide, rotate 10min, then add in the dubbins of 2 parts by weight, rotate 60min；
(8) it is fixed：0.8 parts by weight formic acid is added in into rotary drum, formic acid is divided into three parts, adds in three times, adds in every time Formic acid rotates 8min, draining respectively；
(9) go out drum, take horse, stand 12h, obtain double-layer leather base material；
(10) it is bonded epidermis：Urethane resin adhesives are coated on a surface of double-layer leather base material, it will be by inside The epidermis that superfluorescent fiber non-woven fabrics containing polyurethane elastomer is formed is placed on this surface of double-layer leather base material, is gone forward side by side Row fitting, forms the double-layer leather with epidermis；
(11) hot-press resin layer：The painting as resin bed is placed on the surface of the epidermis of the double-layer leather with epidermis After being covered with the non-woven fabrics of polyurethane elastomer, filming and and epidermis by the melting of hot pressing polyurethane elastomer It fits, hot pressing temperature is 80 DEG C, hot pressing pressure 7kg/cm2To get surpassing Waterproof leather to this.
In step (3), melamine class retanning agent is MD-1 melamine retanning agents, and dihydro-amine class retanning agent is R7 double focusings Cyanamide, acrylate resin tanning agent are RVL resin retaning agents, and more metal retanning agents are ALB aluminium tannin.
In step (4), neutralization type retanning agent is PNK neutralizing retanning agents.
In step (5), waterproofing agent is waterproofing agent 9981.
Embodiment two
A kind of production technology of super Waterproof leather, comprises the following steps：
(1) sorting：It using second layer leather base as raw material, weighs, second layer leather base is put into rotary drum, using second layer leather base as 100 matter Amount part calculates the addition of other substances, and the rotating speed of rotary drum is 8rad/min；
(2) return water：35 DEG C of water, the 0.6 parts by weight formic acid of 250 parts by weight are added in rotary drum, rotates 60min, draining；
(3) retanning：Second layer leather base after return water adds in 35 DEG C of water of 150 parts by weight and the dyestuff of 1.5 parts by weight, 25min is rotated, the dihydro-amine class retanning agent of 2 parts by weight is added in afterwards, is rotated further 30min, adds the acrylic acid of 8 parts by weight Resin tanning agent rotates 20min；Then the dubbin of 1.2 parts by weight is added in, rotates 20min；Add chromium powder, chromium tannin and More each 2 parts by weight of metal retanning agent rotate 40min；
(4) neutralize：It is 3.0 that sodium bicarbonate is added in into rotary drum and adjusts pH, stands 150min after rotating 25min, then rotates 15min, draining；Add in the formic acid of the water of 35 DEG C of 150 parts by weight, the neutralization type retanning agent of 1.5 parts by weight and 0.6 parts by weight Sodium rotates 20min；Then the melamine of 2 parts by weight is added in, adjusts pH to 5.0, rotates 110min；Draining is totally afterwards with 250 28 DEG C of the water washing of parts by weight, draining；
(5) waterproofing agent is added：35 DEG C of water of 100 parts by weight and the waterproofing agent of 2 parts by weight are added in into rotary drum, is rotated 8min；
(6) fill, dye：The acrylate resin tanning agent of 3 parts by weight and the waterproof of 1.2 parts by weight are added in into rotary drum Oil rotates 130min；The dyestuff of 3 parts by weight is added in, is rotated further 110min, then supplement adds in 50 DEG C of 90 parts by weight Water rotates 12min；Then add in the formic acid of 1.0 parts by weight altogether at twice, add in formic acid every time and rotate 9min, draining；
(7) stuffing：It is 30% that 50 DEG C of water of 250 parts by weight and the mass concentration of 0.3 parts by weight are added in into rotary drum Ammonium hydroxide, rotate 12min, then add in the dubbins of 3 parts by weight, rotate 60min；
(8) it is fixed：1.2 parts by weight formic acid are added in into rotary drum, formic acid is divided into three parts, adds in three times, adds in every time Formic acid rotates 9min, draining respectively；
(9) go out drum, take horse, stand 18h, obtain double-layer leather base material；
(10) it is bonded epidermis：Urethane resin adhesives are coated on a surface of double-layer leather base material, it will be by inside The epidermis that superfluorescent fiber non-woven fabrics containing polyurethane elastomer is formed is placed on this surface of double-layer leather base material, is gone forward side by side Row fitting, forms the double-layer leather with epidermis；
(11) hot-press resin layer：The painting as resin bed is placed on the surface of the epidermis of the double-layer leather with epidermis After being covered with the non-woven fabrics of polyurethane elastomer, filming and and epidermis by the melting of hot pressing polyurethane elastomer It fits, hot pressing temperature is 80 DEG C, hot pressing pressure 7kg/cm2To get surpassing Waterproof leather to this.
In step (3), melamine class retanning agent is MD-1 melamine retanning agents, and dihydro-amine class retanning agent is R7 double focusings Cyanamide, acrylate resin tanning agent are RVL resin retaning agents, and more metal retanning agents are ALB aluminium tannin.
In step (4), neutralization type retanning agent is PNK neutralizing retanning agents.
In step (5), waterproofing agent is waterproofing agent 9981.
Embodiment three
A kind of production technology of super Waterproof leather, comprises the following steps：
(1) sorting：It using second layer leather base as raw material, weighs, second layer leather base is put into rotary drum, using second layer leather base as 100 matter Amount part calculates the addition of other substances, and the rotating speed of rotary drum is 5~10rad/min；
(2) return water：40 DEG C of water, the 0.7 parts by weight formic acid of 300 parts by weight are added in rotary drum, rotates 70min, draining；
(3) retanning：Second layer leather base after return water adds in 40 DEG C of water of 160 parts by weight and the dyestuff of 2 parts by weight, turns Dynamic 30min, adds in the melamine class retanning agent of 3 parts by weight, is rotated further 40min, add the propylene of 10 parts by weight afterwards Acid resin tanning agent rotates 25min；Then the dubbin of 2 parts by weight is added in, rotates 25min；Add chromium powder, chromium tannin and More each 3 parts by weight of metal retanning agent rotate 45min；
(4) neutralize：It is 4.0 that sodium bicarbonate is added in into rotary drum and adjusts pH, stands 180min after rotating 30min, then rotates 20min, draining；The sodium formate of the water of 40 DEG C of 160 parts by weight, the neutralization type retanning agent of 2 parts by weight and 0.8 parts by weight is added in, Rotate 30min；Then the melamine of 3 parts by weight is added in, adjusts pH to 5.0, rotates 120min；Draining is totally afterwards with 300 weights Measure 35 DEG C of the water washing of part, draining；
(5) waterproofing agent is added：40 DEG C of water of 120 parts by weight and the waterproofing agent of 3 parts by weight are added in into rotary drum, is rotated 10min；
(6) fill, dye：The acrylate resin tanning agent of 4 parts by weight and the dubbin of 2 parts by weight are added in into rotary drum, Rotate 150min；The dyestuff of 4 parts by weight is added in, is rotated further 120min, then supplement adds in 55 DEG C of water of 100 parts by weight, Rotate 15min；Then add in the formic acid of 1.5 parts by weight altogether at twice, add in formic acid every time and rotate 10min, draining；
(7) stuffing：It is 30% that 60 DEG C of water of 300 parts by weight and the mass concentration of 0.5 parts by weight are added in into rotary drum Ammonium hydroxide, rotate 15min, then add in the dubbins of 4 parts by weight, rotate 60min；
(8) it is fixed：1.5 parts by weight formic acid are added in into rotary drum, formic acid is divided into three parts, adds in three times, adds in every time Formic acid rotates 10min, draining respectively；
(9) go out drum, take horse, stand for 24 hours, obtain double-layer leather base material；
(10) it is bonded epidermis：Urethane resin adhesives are coated on a surface of double-layer leather base material, it will be by inside The epidermis that superfluorescent fiber non-woven fabrics containing polyurethane elastomer is formed is placed on this surface of double-layer leather base material, is gone forward side by side Row fitting, forms the double-layer leather with epidermis；
(11) hot-press resin layer：The painting as resin bed is placed on the surface of the epidermis of the double-layer leather with epidermis After being covered with the non-woven fabrics of polyurethane elastomer, filming and and epidermis by the melting of hot pressing polyurethane elastomer It fits, hot pressing temperature is 80 DEG C, hot pressing pressure 7kg/cm2To get surpassing Waterproof leather to this.
In step (3), melamine class retanning agent is MD-1 melamine retanning agents, and dihydro-amine class retanning agent is R7 double focusings Cyanamide, acrylate resin tanning agent are RVL resin retaning agents, and more metal retanning agents are ALB aluminium tannin.
In step (4), neutralization type retanning agent is PNK neutralizing retanning agents.
In step (5), waterproofing agent is waterproofing agent 9981.
In the present invention, the superfluorescent fiber non-woven fabrics used and the non-woven fabrics coated with polyurethane elastomer are ability The known material in domain.
The product form and style of above-described embodiment and the non-limiting present invention, the ordinary skill people of any technical field The appropriate variation or modification that member does it all should be regarded as not departing from the patent category of the present invention.

Claims (7)

1. a kind of production technology of super Waterproof leather, it is characterised in that：Comprise the following steps：
(1) sorting：It using second layer leather base as raw material, weighs, second layer leather base is put into rotary drum, using second layer leather base as 100 mass parts The addition of other substances is calculated, the rotating speed of rotary drum is 5~10rad/min；
(2) return water：30~40 DEG C of water, 0.5~0.7 parts by weight formic acid of 200~300 parts by weight are added in rotary drum, is rotated 50~70min, draining；
(3) retanning：Second layer leather base after return water adds in 30~40 DEG C of the water and 1~2 parts by weight of 140~160 parts by weight Dyestuff, rotate 15~30min, add in the melamine class retanning agent of 1~3 parts by weight or dihydro-amine class retanning agent afterwards, 20~40min is rotated further, adds the acrylate resin tanning agent of 6~10 parts by weight, rotates 20~25min；Then 0.5 is added in The dubbin of~2 parts by weight rotates 20~25min；Add chromium powder, chromium tannin and each 1~3 weight of more metal retanning agents Part, rotate 40~45min；
(4) neutralize：Into rotary drum add in sodium bicarbonate adjust pH be 3.0~4.0, rotate 20~30min after stand 120~ Then 180min rotates 10~20min, draining；Add in the neutralization of the water, 1~2 parts by weight of 30~40 DEG C of 140~160 parts by weight The sodium formate of type retanning agent and 0.5~0.8 parts by weight rotates 10~30min；Then the melamine of 1~3 parts by weight is added in Amine adjusts pH to 4.5~5.0, rotates 100~120min；Draining is totally afterwards with 25~35 DEG C of water of 280~300 parts by weight Washing, draining；
(5) waterproofing agent is added：30~40 DEG C of water of 80~120 parts by weight and the waterproof of 1~3 parts by weight are added in into rotary drum Agent rotates 5~10min；
(6) fill, dye：The acrylate resin tanning agent of 2~4 parts by weight and the waterproof of 0.5~2 parts by weight are added in into rotary drum Oil rotates 120~150min；Add in 2~4 parts by weight dyestuff, be rotated further 90~120min, then supplement add in 80~ 45~55 DEG C of water of 100 parts by weight rotates 10~15min；Then the formic acid of 0.5~1.5 parts by weight is added in altogether at twice, often Secondary addition formic acid rotates 8~10min, draining；
(7) stuffing：40~60 DEG C of water of 200~300 parts by weight and the quality of 0.2~0.5 parts by weight are added in into rotary drum Concentration is 30% ammonium hydroxide, rotates 10~15min, then adds in the dubbin of 2~4 parts by weight, rotates 60min；
(8) it is fixed：0.8~1.5 parts by weight formic acid is added in into rotary drum, formic acid is divided into three parts, adds in three times, adds in every time Formic acid rotates 8~10min, draining respectively；
(9) go out drum, take horse, standing 12~for 24 hours, obtain double-layer leather base material；
(10) it is bonded epidermis：The application of adhesive on a surface of the double-layer leather base material, will be by superfluorescent fiber non-woven fabrics shape Into epidermis be placed on this surface of the double-layer leather base material, and be bonded, form the double-layer leather with epidermis；
(11) hot-press resin layer：The painting as resin bed is placed on the surface of the epidermis of the double-layer leather with epidermis After being covered with the non-woven fabrics of polyurethane elastomer, filming and and epidermis by the melting of hot pressing polyurethane elastomer It fits, obtains the super Waterproof leather.
2. a kind of production technology of super Waterproof leather according to claim 1, it is characterised in that：In step (3), described three Paracyanogen amine retanning agent be MD-1 melamine retanning agents, the dihydro-amine class retanning agent be R7 double focusing cyanamides, the acrylic acid Resin tanning agent is RVL resin retaning agents, and more metal retanning agents are ALB aluminium tannin.
3. a kind of production technology of super Waterproof leather according to claim 1, it is characterised in that：In step (3), the chromium The mass ratio of powder, chromium tannin and more metal retanning agents is 1：1：1.
4. a kind of production technology of super Waterproof leather according to claim 1, it is characterised in that：In step (4), in described It is PNK neutralizing retanning agents with type retanning agent.
5. a kind of production technology of super Waterproof leather according to claim 1, it is characterised in that：It is described anti-in step (5) Aqua is waterproofing agent 9981.
6. a kind of production technology of super Waterproof leather according to claim 1, it is characterised in that：It is described in step (10) Adhesive is urethane resin adhesives.
7. a kind of production technology of super Waterproof leather according to claim 1, it is characterised in that：It is described in step (10) Superfluorescent fiber non-woven fabrics is the internal superfluorescent fiber non-woven fabrics containing polyurethane elastomer.
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CN107217110B (en) * 2017-07-27 2019-12-06 漳州香洲皮革有限公司 Manufacturing process of waterproof long fur
CN108048605A (en) * 2017-12-20 2018-05-18 宁夏金海皮业有限责任公司 The processing technology of Waterproof Leather
CN110846446A (en) * 2018-08-20 2020-02-28 广东理标信息科技有限公司 Production process of waterproof leather
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